/*******************************************************************************
 * Copyright (c) 2000, 2002 IBM Corporation and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Common Public License v0.5
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v05.html
 * 
 * Contributors:
 * IBM - Initial API and implementation
 * Boris Pruessmann - Cleanup, documentation
 ******************************************************************************/
package net.sourceforge.perforce.core.internal.utils;

import java.util.ArrayList;
import java.util.List;

import net.sourceforge.perforce.core.internal.Policy;

/** A FileNameMatcher associates a String with a String pattern.
  * 
  * Note: code copied from org.eclipse.team.internal.ccvs.core.util on Nov 7th 2002. 
  */
public class FileNameMatcher 
{
	// --------------------------------------------------------------------------- Private Constants
	
	private static final String TRUE = "true";                                         //$NON-NLS-1$
		
	// --------------------------------------------------------------------------- Private Variables
	
	private List matchers = new ArrayList();
	private List results = new ArrayList();
	
	// ------------------------------------------------------------------------- Public Constructors
	
	public FileNameMatcher() 
	{
	}
	
	public FileNameMatcher(String[] patterns) 
	{
		register(patterns);
	}
	
	// ------------------------------------------------------------------------------ Public Methods

	public void register(String pattern, String result) 
	{		
		Policy.assertTrue(matchers.size() == results.size());
		
		pattern = pattern.trim();
		
		// The empty pattern matches everything, but we want to match
		// nothing with it, so we just do not register anything
		if (pattern.length() == 0) 
		{
			return;
		}
	
		matchers.add(new StringMatcher(pattern,false,false));
		results.add(result);
		
	}
	
	public String getMatch(String name) 
	{
		StringMatcher stringMatcher;
		
		for (int i = 0; i < matchers.size(); i++) {
			stringMatcher = (StringMatcher) matchers.get(i);
			if (stringMatcher.match(name)) {
				return (String)results.get(i);
			}
		}
		
		return null;
	}
	
	public boolean match(String name) 
	{
		return getMatch(name) != null;
	}

	// ------------------------------------------------------------------------------------- Methods
		
	void register(String[] patterns) 
	{
		for (int i = 0; i < patterns.length; i++) 
		{
			register(patterns[i],TRUE);
		}
	}	
}